Wobbling toy

ABSTRACT

For realizing a wobbling toy which is low in price and is actuated with low electricity, the wobbling toy having a wobbling part which wobbles centering around a predetermined shaft having: ( 1 ) a solar battery as a power source; ( 2 ) an internal circuit for watch which actuates by the solar battery; ( 3 ) a magnet coil which is excited by a voltage pulse from the internal circuit for watch, and switches a polarity; and ( 4 ) an electromagnet which is provided on the wobbling part, and is subjected to an action of an electromagnetic force from the magnet coil.

FIELD OF THE INVENTION

[0001] The present invention relates a wobbling toy and particularly, toa wobbling toy which is low in price and saves energy.

DESCRIPTION OF THE RELATED ART

[0002] Various wobbling toys have been known, and especially, a wobblingtoy in which a dry battery or a button battery is used as an electricsource, and a motor is used as a power source has been well known. Awobbling toy in which a shaft of a wobbling part is simply inserted intoa shaft hole to be supported, or both end surfaces of the shaft arelightly held to prevent a movement of the shaft in an axis directionthereof is generally known.

[0003] However, in the case of using a dry battery or a button batteryas a power source, a problem occurs such a battery replacement due to abattery shutoff, which is troublesome, and expense for a battery. In awobbling toy in which a motor is used as a power source, there is aproblem that the motor costs a lot. Moreover, in a wobbling toy in whichthe shaft of the wobbling part is simply inserted into the shaft hole tobe supported, or both end surfaces of the shaft are lightly held,friction on a bearing is huge while wobbling, and a measurable amount ofpower consumption is required.

SUMMARY OF THE INVENTION

[0004] The present invention has been developed in view of the problem,and an object of the present invention is to provide a wobbling toywhich is low in price and is actuated with low electricity.

[0005] The wobbling toy claimed in claim 1 having a wobbling part whichwobbles centering around a predetermined shaft comprises: (1) a solarbattery as a power source; (2) an internal circuit for watch whichactuates by the solar battery; (3) a magnet coil which is excited by avoltage pulse from the internal circuit for watch, and switches apolarity; and (4) an electromagnet which is provided on the wobblingpart, and is subjected to an action of an electromagnetic force from themagnet coil.

[0006] According to the wobbling toy, since the solar battery is used, abattery which is necessary to be replaced is not required, therebyreducing the cost for maintenance thereof. Moreover, the internalcircuit (IC) for watch which is low in price in comparison with a normalinternal circuit (IC) is used, the cost can be reduced.

[0007] In the wobbling toy claimed in claim 2, the wobbling toy claimedin claim 1, wherein at least both end parts of the predetermined shaftare formed in a square shape, and a ridgeline part formed by twoadjacent surfaces of a periphery of each of the both end parts issupported by a spring from downward in a point contact state.

[0008] According to the wobbling toy, since the wobbling is performedcentering around the ridgeline parts of the both end parts of the shaft,the friction is low while wobbling and also, it becomes possible to makethe toy wobble with low electricity.

[0009] In the wobbling toy claimed in claim 3, the wobbling toy claimedin claim 1 or 2, wherein at least the both end parts of thepredetermined shaft are formed in the square shape, the wobbling toycomprises springs each of which point-contacts with a sharp point formedby the two adjacent surfaces of the periphery and an end surface of thepredetermined shaft of each of the both end parts, and a movement in anaxis direction of the shaft is suppressed by each of the springs.

[0010] According to the wobbling toy, since the movement of the shaft inthe axis direction thereof is suppressed by the springs, each of whichpoint-contacts with the sharp point of each of the both ends of theshaft, the friction is low while wobbling and also, it becomes possibleto make the toy wobble with low electricity.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011]FIG. 1 is a perspective view showing an embodiment of a wobblingtoy according to the present invention;

[0012]FIG. 2 is a cross sectional view of the wobbling toy seen from aside;

[0013]FIG. 3 is a cross sectional view of the wobbling toy seen from afront side;

[0014]FIG. 4 is a perspective view of a support structure of a shaft;

[0015]FIG. 5 is a perspective view showing a structure for suppressingmovement in an axis direction of the shaft; and

[0016]FIG. 6 is an internal circuit diagram.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] 1. Whole Configuration

[0018] A wobbling toy 100 comprises a base 10 and a doll body 20 asshown in FIG. 1.

[0019] The base 10 is formed in a bowl shape representing a hill or afield. A stage 11 is formed on a front side of the base 10, and a solarbattery is mounted in a footboard part of the stage 11. A power switchwhich is not shown is provided on a back side of the base 10. This powerswitch 10 is not necessarily provided.

[0020] The doll body 20 comprises an adult doll 21 and a child doll 22.The adult doll 21 is shaped in a sitting posture on the base 10, and thechild doll 22 is formed in a state of leaning over on the adult doll 21.The adult doll 21 is configured such that a head part 21 b wobbles fromside to side to a body part 21 a.

[0021] 2. Inner Structure

[0022] As shown in FIGS. 2 and 3, the wobbling toy 100 is provided witha pendulum 30 inside thereof. The pendulum 30 can wobble from side toside centering around a shaft 31 supported by the body part 21 a. Thependulum 30 is fixed on the head part 21 b at an upper side portion, andis provided with a permanent magnet 32 at a lower portion. The permanentmagnet 32 is formed in a cylindrical shape, and is mounted to thependulum 30 to make one of the north pole and south pole face the front.

[0023] The wobbling toy 100 is also provided with a magnet coil 33inside thereof, a central line of which extends in a directionperpendicular to a wobbling surface of the pendulum 30. The magnet coil33 is positioned on a left side in FIG. 3 with respect to a center ofthe permanent magnet 32 provided on the lower portion of the pendulum 30at a back side of a belly of the doll 21.

[0024] Right and left arms of 23, 23 of the doll 21 extend into the bodypart 21 a to be fixed.

[0025] 3. Support Structure of Shaft 31

[0026] As shown in FIGS. 4 and 5, both end parts 31 a, 31 a of the shaft31 is formed in a square bar shape, each of which is inserted into around hole 35 formed in the body part 21 a. A torsion coil spring 36 isprovided near each of the round holes 35, 35 in the body part 21 a. Oneend parts of both of the torsion coil springs 36, 36 are inpoint-contact with corners (a ridgeline formed by two adjacent surfacesof a periphery of the shaft) of the both end portions 31 a, 31 a of theshaft 31 from downward, respectively, to support the shaft 31.

[0027] As shown in FIGS. 2 and 4, the body part 21 a is provided with aleaf spring 37 near each end of the shaft 31. Both of the leaf springs37 are in point-contact with both end corners (a sharp point formed withthe two adjacent surfaces of a periphery of the shaft and an end surfaceof the shaft) of the shaft 31 from downward, respectively. The leafsprings 37 function to suppress movement of the shaft 31 in an axisdirection.

[0028] 4. Internal Circuit

[0029] The wobbling toy 100 is provided with an internal circuit (IC)for watch 40 shown in FIG. 6 inside thereof. A solar battery 42 is usedas a power source for the IC for watch 40, and a crystal oscillator 41is activated by electricity stored in the solar battery 42. The magnetcoil 33 connected to the IC for watch 40 is excited by a voltage pulsefrom the IC for watch 40. In this case, the voltage pulse is appliedfrom the IC for watch 40 to both ends of the magnet coil 33 alternately.Thus, a portion of the magnet coil 33 which faces the permanent magnet32 changes the polarity from north to south pole or vice versa. Bychanging the polarity, the pendulum 30 is wobbled from side to side.

[0030] The magnet coil 33 is provided with a resistance 43 in series.The reason to provide the resistance 43 is as follows. The magnetic coil33 has a low resistance when current is started to flow, therefore,electricity is consumed immediately for a while after the solar battery42 started to store electricity. It may cause the pendulum 30 not towobble. For preventing this problem, the resistance 43 is provided.

[0031] 5. Actuation

[0032] When the wobbling toy 100 is put in a bright site, the solarbattery 42 stores electricity. Voltage pulses are output from the IC forwatch 40 by the electric power stored in the solar battery 42 to excitethe magnet coil 33. In this case, the magnet coil 33 changes thepolarity, enabling the pendulum 30 thus the head part 2 b to wobble fromside to side by the electromagnetic power.

[0033] The embodiment of the present invention has been explained above,however, it is understood that the present invention is not limited tothe embodiment and various changes may be resorted to without departingfrom the scope of the invention.

[0034] Advantageous Effect of The Invention

[0035] A representative effect of the present invention is as follows.The wobbling toy having a wobbling part which wobbles centering around apredetermined shaft comprises (1) a solar battery as a power source, (2)an internal circuit for watch which actuates by the solar battery, amagnet coil which is excited by a voltage pulse from the internalcircuit for watch, and switches a polarity, and (3) an electromagnetprovided on the wobbling part, and is subjected to an action of anelectromagnetic force from the magnet coil, so that the wobbling toywhich is low in price and saves energy can be realized.

What is claimed is:
 1. A wobbling toy having a wobbling part whichwobbles centering around a predetermined shaft comprising: (1) a solarbattery as a power source; (2) an internal circuit for watch whichactuates by the solar battery; (3) a magnet coil which is excited by avoltage pulse from the internal circuit for watch, and switches apolarity; and (4) an electromagnet which is provided on the wobblingpart, and is subjected to an action of an electromagnetic force from themagnet coil.
 2. The wobbling toy as claimed in claim 1, wherein at leastboth end parts of the predetermined shaft are formed in a square shape,and a ridgeline part formed by two adjacent surfaces of a periphery ofeach of the both end parts is supported by a spring from downward in apoint contact state.
 3. The wobbling toy as claimed in claim 1 or 2,wherein at least the both end parts of the predetermined shaft areformed in the square shape, the wobbling toy comprises springs each ofwhich point-contacts with a sharp point formed by the two adjacentsurfaces of the periphery and an end surface of the predetermined shaftof each of the both end parts, and a movement in an axis direction ofthe shaft is suppressed by each of the springs.